diff --git a/content/base/src/nsDocument.cpp b/content/base/src/nsDocument.cpp
index 40347c7cb22d..070868d73f20 100644
--- a/content/base/src/nsDocument.cpp
+++ b/content/base/src/nsDocument.cpp
@@ -3974,7 +3974,13 @@ nsDocument::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
    // FIXME! This is a hack to make middle mouse paste working also in Editor.
    // Bug 329119
   aVisitor.mForceContentDispatch = PR_TRUE;
-  aVisitor.mParentTarget = GetWindow();
+
+  // Load events must not propagate to |window| object, see bug 335251.
+  if (!(aVisitor.mEvent->message == NS_IMAGE_LOAD ||
+        aVisitor.mEvent->message == NS_PAGE_LOAD ||
+        aVisitor.mEvent->message == NS_SCRIPT_LOAD)) {
+    aVisitor.mParentTarget = GetWindow();
+  }
   return NS_OK;
 }
 
diff --git a/dom/src/base/nsGlobalWindow.cpp b/dom/src/base/nsGlobalWindow.cpp
index bfa23e77a5a7..908ec61aacec 100644
--- a/dom/src/base/nsGlobalWindow.cpp
+++ b/dom/src/base/nsGlobalWindow.cpp
@@ -1721,9 +1721,7 @@ nsGlobalWindow::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
   }
 
   // Check chrome document capture here.
-  // XXX The chrome can not handle this, see bug 51211
-  // FIXME Fix this for other *LOAD events, bug 329514.
-  if (mChromeEventHandler && msg != NS_IMAGE_LOAD) {
+  if (mChromeEventHandler) {
     aVisitor.mParentTarget = mChromeEventHandler;
     aVisitor.mParentIsChromeHandler = PR_TRUE;
   }